A radio frequency package and radio frequency tag

Abstract

This application provides an RFID packaging box and an RFID tag to solve the problem of associating information with packaging boxes. The RFID packaging box has an RFID tag affixed to it. The RFID tag includes a dielectric layer, an antenna body, an RFID chip, and an adhesive layer. The antenna body includes a radiating element, an antenna ground, a feed pin, a shorting pin, and a gap compensation structure. When the RFID tag is affixed to the packaging box, the portion containing the antenna ground is affixed to the inside of the side cardboard of the packaging box, while the portions containing the shorting pin and the feed pin are affixed to the inside of the top cardboard of the packaging box. The gap compensation structure effectively improves the adaptability of the RFID tag to various metal items inside the RFID packaging box and effectively reduces the obstruction of electromagnetic wave radiation by metal items in other surrounding packaging boxes, thereby improving the overall readability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency technology, in particular to a radio frequency packaging box and a radio frequency tag. BACKGROUND

[0002] In the supply chain management, the marking technology often used is to mark the production date, production batch number, etc.

[0003] The common way is to spray the required information or the bar code, two-dimensional code and other identification codes corresponding to the information on the paper packaging box, or to spray and print on the label paper, and then to attach to the packaging box body.

[0004] However, this way can usually accommodate a small amount of information, has low production efficiency, cannot batch identify information, and is easy to be stained, especially in the food traceability system, the above marking form is difficult to effectively provide relevant information. And once the phenomenon of staining, label falling off, etc. occurs, the accurate origin information and traceability information of the product in the box cannot be accurately judged. SUMMARY

[0005] Embodiments of the present application provide a radio frequency packaging box to solve the problem of packaging box associated information.

[0006] Correspondingly, embodiments of the present application also provide a radio frequency tag.

[0007] In order to solve the above problems, the embodiments of the present application disclose a radio frequency packaging box, the radio frequency packaging box comprising: a packaging box and a radio frequency tag;

[0008] The radio frequency tag comprises: a dielectric layer, an antenna body, a radio frequency chip and a glue layer, the antenna body being connected to the radio frequency chip through conductive glue;

[0009] The antenna body comprises: a radiation oscillator, an antenna ground, a feed pin, a short-circuit pin and a slot compensation structure;

[0010] When the radio frequency tag is pasted on the packaging box, the part where the antenna ground is located is pasted on the inner side of the side paperboard of the packaging box, and the part where the short-circuit pin and the feed pin are located is pasted on the inner side of the top paperboard of the packaging box.

[0011] Optionally, the distance between the radio frequency tag and the vertical edge of the packaging box is greater than one-quarter of the wavelength of the working frequency, and the distance is less than one-half of the wavelength of the working frequency.

[0012] Optionally, the radio frequency chip is in conduction with the feed pin through conductive glue.

[0013] The feed pin, the short-circuit pin and the slot compensation structure constitute an impedance matching network.

[0014] Optionally, when the metal object is placed in the radio frequency packaging box, the antenna ground of the antenna body and the metalized packaging object are electromagnetically coupled, and a mirror current is generated on the metal layer of the metalized packaging object, so that the metal layer of the metalized packaging object serves as a complementary ground of the antenna body.

[0015] Optionally, the end of the radiating oscillator of the antenna body has a curved structure.

[0016] Optionally, the shape of the gap compensation structure is trapezoidal, triangular or stepped.

[0017] Optionally, the antenna body is formed by etching or printing of conductive material.

[0018] The embodiment of the present application also discloses a radio frequency tag, which comprises a dielectric layer, an antenna body, a radio frequency chip and a glue layer.

[0019] The antenna body is located between the dielectric layer and the radio frequency chip, and the antenna body is connected to the radio frequency chip through conductive glue.

[0020] The antenna body comprises a radiating oscillator, an antenna ground, a feeding needle, a short-circuit needle and a gap compensation structure.

[0021] The feeding needle of the antenna body is connected to the radio frequency chip through conductive glue.

[0022] Optionally, the shape of the gap compensation structure is trapezoidal, triangular or stepped.

[0023] Optionally, the end of the radiating oscillator of the antenna body has a curved structure.

[0024] Compared with the prior art, the embodiment of the present application has the following advantages:

[0025] In the embodiment of the present application, the radio frequency packaging box is pasted with a radio frequency tag, the radio frequency tag comprises a dielectric layer, an antenna body, a radio frequency chip and a glue layer, the antenna body comprises a radiating oscillator, an antenna ground, a feeding needle, a short-circuit needle and a gap compensation structure, when the radio frequency tag is pasted on the packaging box, the part where the antenna ground is pasted on the inner side of the side paperboard of the packaging box, the part where the short-circuit needle and the feeding needle are pasted on the inner side of the top paperboard of the packaging box, the gap compensation structure can effectively improve the adaptability of the radio frequency tag to various metal objects in the radio frequency packaging box, and the three-dimensional structure formed after the radio frequency tag is bent can effectively reduce the hindrance of the metal in the surrounding other packaging boxes to electromagnetic wave radiation, thereby improving the overall reading rate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of a radio frequency packaging box example of the embodiment of the present application;

[0027] Figure 2 is a schematic diagram of a radio frequency tag example of an embodiment of the present application;

[0028] Figure 3 is a schematic diagram of a hierarchical structure in a radio frequency tag example of an embodiment of the present application;

[0029] Figure 4 is a partial schematic diagram of a radio frequency packaging box sealing example of an embodiment of the present application.

[0030] Reference signs: 1, packaging box; 11, top paperboard; 12, top paperboard; 13, top paperboard; 14, top paperboard; 2, radio frequency tag; 20, demarcation line; 21, medium layer; 22, antenna body; 221, radiation oscillator; 222, antenna ground; 223, feed needle; 224, short-circuit needle; 225, gap compensation structure; 23, radio frequency chip; 24, adhesive layer; 3, content. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] Embodiments of the present application can be applied to the logistics field, and the logistics objects in the logistics field are processing objects of the logistics system, such as objects transported by various logistics methods, goods, express packages, take-out objects, etc. The radio frequency packaging box of the present application can be used as a container for carrying logistics objects in the logistics field, and the carried logistics objects can be various goods, take-out food, supermarket goods, etc.

[0033] Referring to Figure 1 , a schematic diagram of a radio frequency packaging box example of an embodiment of the present application is shown.

[0034] Referring to Figure 2 , a schematic diagram of a radio frequency tag example of an embodiment of the present application is shown.

[0035] Referring to Figure 3 , a schematic diagram of a hierarchical structure in a radio frequency tag example of an embodiment of the present application is shown.

[0036] Referring to Figure 4 , a partial schematic diagram of a radio frequency packaging box sealing example of an embodiment of the present application is shown.

[0037] The radio frequency packaging box comprises a packaging box 1 and a radio frequency tag 2. The packaging box 1 is a corrugated carton or a composite paper packaging box. The top paperboard of the packaging box comprises four top paperboards 11, 12, 13 and 14. The radio frequency tag 2 comprises a medium layer 21, an antenna body 22, a radio frequency chip 23 and a glue layer 24. The radio frequency tag is attached to the inner side of the packaging box 1 through the glue layer. In the embodiment of the application, the packaging box can also be composed of various materials, such as plastic materials used in part of the packaging box. For example, the packaging box has a hollow structure covered with transparent plastic material, or other functional structures of other materials are added to the packaging box to facilitate the appearance and reinforcement of the packaging box.

[0038] The radio frequency tag has a bending structure, one part of which is attached to the inner side of the side paperboard of the packaging box, and the other part is attached to the inner side of the top paperboard of the packaging box. The part of the radio frequency tag attached to the top paperboard of the packaging box can be bent with the top paperboard. The material of the medium layer of the radio frequency tag is a PET (PolyEthylene Terephthalate, polyester resin) film, which can also be other plastic or resin materials, such as polyimide film, etc. The medium loss tangent of the medium layer is small. The antenna body can be etched or printed with conductive material, such as aluminum, copper or other conductive materials. The thickness of the medium layer of the radio frequency tag is 20-50 microns, and the thickness of the antenna body is 5-10 microns, which is relatively thin, facilitating bending and not easy to damage.

[0039] In summary, the radio frequency packaging box has a radio frequency tag attached to the packaging box, wherein the radio frequency tag has a bending structure, one part of which is attached to the inner side of the side paperboard of the packaging box, and the other part is attached to the inner side of the top paperboard of the packaging box, so that the radio frequency tag is in an invisible state after the box is sealed, which can greatly avoid malicious peeling of the radio frequency tag, and can improve the management efficiency in cooperation with the radio frequency reading device.

[0040] The antenna body 22 is composed of a radiation oscillator 221, an antenna ground 222, a feed pin 223 connected to the radio frequency chip, a short-circuit pin 224 and a slot compensation structure 225. The slot compensation structure is not covered with a metal layer, thereby forming a slot to improve the adaptability to the objects contained in the packaging box, such as improving the adaptability to various metal objects in the packaging box. Figure 2 The slot compensation structure 225 is a stepped slot compensation structure, which can also be in the shape of a trapezoid, a triangle, etc. in actual processing, which can be adjusted based on requirements.

[0041] When the radio frequency tag 2 is pasted on the packaging box, the part where the antenna ground 222 is located is pasted on the inner side of the side paperboard of the packaging box, and the part where the shorting pin 224 and the feeding pin 223 are located is pasted on the inner side of the top paperboard of the packaging box. As shown in the figure, the antenna ground 222, the radiating vibrator 221, the feeding pin 223 and the shorting pin 224 are separated by a boundary line, which is used to mark the boundary position of the bending structure. In actual processing, the boundary line can not exist. Of course, in some scenarios, the boundary line can also be set to facilitate bending, and the embodiments of the present application do not limit this. The slot compensation structure 225 can be arranged to be entirely located below the boundary line, or can be arranged to be partially located below the boundary line and partially located above the boundary line. Figure 2

[0042] In one example, the part below the boundary line (the antenna ground 222 and part of the slot compensation structure 225) is pasted on the inner side of the side paperboard of the packaging box, and the part above the boundary line (the radiating vibrator 221, the feeding pin 223, the shorting pin 224 and the other part of the slot compensation structure 225) is pasted on the inner side of the top paperboard of the packaging box.

[0043] Based on the structure of the radio frequency tag described above, the radio frequency tag can form a three-dimensional structure after being bent. The radio frequency tag with the three-dimensional structure can effectively reduce the obstruction of metal in other surrounding packaging boxes to electromagnetic wave radiation, thereby improving the overall reading rate of the radio frequency tag system.

[0044] In the embodiments of the present application, the distance a between the radio frequency tag 2 attached on the radio frequency packaging box and the vertical edge of the packaging box 1 is the smallest vertical edge of the packaging box 1. The distance a has the following characteristics: Wherein λ is the wavelength corresponding to the working frequency of the radio frequency antenna, so that when the content 3 of the packaging box is a metal article, the radio frequency tag can obtain good radio frequency performance.

[0045] Wherein the metal articles carried in the radio frequency packaging box include metalized packaging articles. Such as aluminum foil packaging products, products wrapped with aluminum foil heat preservation materials, etc.

[0046] Wherein, after the radio frequency packaging box is loaded with metal articles and sealed, the part of the radio frequency tag pasted on the top paperboard is located between the pasted top paperboard 11 and another top paperboard 12, so that the radio frequency chip is protected by two layers of paperboards, which can reduce the possibility of radio frequency tag failure. And after sealing, the radio frequency tag is in an invisible state, which can avoid malicious peeling of the radio frequency tag. Combined with the hidden radio frequency reading device, the function of anti-channeling inspection in the field of supply chain management can be effectively realized. For example, in the warehouse management, the information carried by the radio frequency tag on the radio frequency packaging box can be read based on the radio frequency reading device, so as to determine whether the objects of warehousing and delivery are accurate.

[0047] ​The radio frequency chip 23 is connected with the feed pin 223 through anisotropic conductive adhesive. The feed pin 223, the short pin 224 and the slot compensation structure 225 form an impedance matching network of the radio frequency chip. That is, the impedance matching network of the antenna body is a T-match structure composed of the feed pin and the short pin, combined with the stepped slot compensation structure.

[0048] As shown in Figure 4 When the metal article 3 in the radio frequency package box approaches the radio frequency tag, electromagnetic coupling is generated between the antenna ground of the antenna body and the metal article, and mirror current is generated on the metal layer of the metal article. At this time, the metal layer of the metal article serves as a supplementary ground of the antenna body to improve the antenna gain.

[0049] At the same time, the antenna impedance is also affected by the metal, causing the real part and the imaginary part of the impedance to increase simultaneously, which may cause the center frequency of the RFID tag to decrease and the radio frequency performance to deteriorate. Since the distances b and c of the radio frequency tag from the metal article in the package box are greatly different due to the influence of the type and quantity of the article, the change range of the antenna impedance is also relatively large. The distance b is the distance between the part of the radio frequency tag attached to the inside of the side paperboard of the package box and the metal article in the package box, and the distance c is the distance between the part of the radio frequency tag attached to the inside of the top paperboard of the package box and the metal article in the package box. In view of the above problems, the antenna body of the radio frequency tag of the embodiment has a slot compensation structure 225. The series inductance introduced by the slot compensation structure 225 can greatly reduce the influence of the metal article on the impedance of the antenna body. When the distances b and c decrease, such as when the package box is full of articles, the real part and the imaginary part of the impedance of the antenna body increase. However, the slot compensation structure of the embodiment is simultaneously affected by the decrease of b and c, so that the series inductance introduced by the slot compensation structure decreases, thereby reducing the degree of increase of the real part and the imaginary part of the impedance. Conversely, the slot compensation structure can effectively improve the adaptability of the radio frequency tag to various metal articles in the radio frequency package box.

[0050] In the embodiment, the end of the radiating element 221 of the antenna body uses a curved structure, as shown in Figure 2 The end of the capacitive load radiating element has a large area of stored metal charge, which can effectively reduce the physical size of the radiating element. At the same time, the change in the antenna radiation direction formed by the curved structure enables the RFID tag to be read by the radio frequency reading and writing device in the direction of the spaced metal articles, thereby ensuring the stability of the radio frequency performance.

[0051] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0052] Although preferred embodiments of the application have been described in detail, those skilled in the art will appreciate that various modifications and alterations can be made to the embodiments without departing from the scope of the application. Accordingly, the appended claims are intended to encompass all such modifications and alterations as falling within the scope of the application.

[0053] Finally, it should be noted that, in the description of the application, relational terms such as first and second, and the like, can be used solely to distinguish one entity or action from another entity or action without necessarily implying any actual relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0054] The above provides a radio frequency packaging box and a radio frequency tag, and the principles and implementation manners of the application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation manners and application ranges can be changed, and the above description should not be understood as limiting the application.

Claims

1. An RFID packaging box, characterized in that, The RFID packaging box includes: a packaging box and an RFID tag; The radio frequency tag includes: a dielectric layer, an antenna body, a radio frequency chip, and an adhesive layer. The antenna body is connected to the radio frequency chip through conductive adhesive. The dielectric layer is made of plastic or resin. The antenna body includes: a radiating element, an antenna ground, a feed pin, a short-circuit pin, and a gap compensation structure. The radio frequency chip is connected to the feed pin through conductive adhesive. The feed pin, short-circuit pin, and gap compensation structure constitute an impedance matching network. When the RFID tag is affixed to the packaging box, the part containing the antenna ground is affixed to the inside of the side cardboard of the packaging box, and the parts containing the shorting pin and the feed pin are affixed to the inside of the top cardboard of the packaging box. The distance between the RFID tag and the vertical edge of the packaging box is greater than one-quarter wavelength of the operating frequency, and the distance is less than one-half wavelength of the operating frequency.

2. The radio frequency packaging box according to claim 1, characterized in that, When a metal item is placed inside the radio frequency packaging box, electromagnetic coupling occurs between the antenna ground of the antenna body and the metallized packaging item, and a mirror current is generated on the metal layer of the metallized packaging item, so that the metal layer of the metallized packaging item serves as a supplementary ground for the antenna body.

3. The radio frequency packaging box according to claim 1, characterized in that, The radiating element of the antenna body has a curved structure at its end.

4. The radio frequency packaging box according to claim 1, characterized in that, The shape of the gap compensation structure is trapezoidal, triangular, or stepped.

5. The radio frequency packaging box according to claim 1, characterized in that, The antenna body is formed by etching or printing conductive material.

6. An RFID tag, characterized in that, The radio frequency tag includes: a dielectric layer, an antenna body, a radio frequency chip, and an adhesive layer; The antenna body is located between the dielectric layer and the radio frequency chip, and the antenna body is connected to the radio frequency chip by conductive adhesive. The antenna body includes: a radiating element, an antenna ground, a feed pin, a short-circuit pin, and a gap compensation structure. The radio frequency chip is connected to the feed pin through conductive adhesive. The feed pin, short-circuit pin, and gap compensation structure constitute an impedance matching network. The feed pin of the antenna body is connected to the radio frequency chip through conductive adhesive; The RFID tag has a bent structure, with one part pasted on the inside of the side cardboard of the packaging box and the other part pasted on the inside of the top cardboard of the packaging box.

7. The radio frequency tag according to claim 6, characterized in that, The shape of the gap compensation structure is trapezoidal, triangular, or stepped.

8. The radio frequency tag according to claim 6, characterized in that, The radiating element of the antenna body has a curved structure at its end.

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